Working wheel install and pip/setuptools upgrade into .drone.yml and Dockerfile.

.drone.yml

@@ -5,6 +5,7 @@ cache:
 build:
   image: python:3.5.1-alpine
   commands:
+    - pip install --upgrade pip setuptools wheel
     - pip wheel -r requirements.txt --wheel-dir=wheeldir --find-links=wheeldir
     - pip wheel -r test-requirements.txt --wheel-dir=wheeldir --find-links=wheeldir
     - pip install --use-wheel --no-index --find-links=wheeldir -r requirements.txt

Dockerfile

 FROM python:3.5.1-alpine
 MAINTAINER Greg Taylor <[email protected]>
 
+RUN pip install --upgrade pip setuptools wheel
 COPY wheeldir /opt/app/wheeldir
 # These are copied and installed first in order to take maximum advantage
 # of Docker layer caching (if enabled).